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MEMS Reconfigurable Antenna Patch Antenna Analysis Using WIPL-D

Medeiros, C. R. ; Costa, J.R. ; Fernandes, C. A. ; Kolundzija,

MEMS Reconfigurable Antenna Patch Antenna Analysis Using WIPL-D, Proc International Symp. on RF MEMS and RF Microsystems, Barcelona, Spain, Vol. 1, pp. 67 - 70, June, 2007.

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Abstract
This paper investigates the feasibility of
using a commercial numerical electromagnetic solver -
WIPL-D Microwave - to completely model a MEMS
reconfigurable patch antenna. The proposed model takes
into account not only the switch RF characteristic through
its scattering matrix, but also the influence of the MEMS
encapsulation and of the DC actuation circuit on antenna
performance in terms of impedance and radiation pattern.
To achieve this, a procedure is proposed using WIPL-D
Microwave to combine a 3D EM analysis of the antenna
with a microwave circuit analysis. The proposed procedure
is used to accurately model and design a frequency agile
patch antenna, in the 2.5 to 3 GHz frequency band, with
packaged commercial MEMS switches. Experimental
results agree quite well with simulations.